Well, I was joking, 'cause I assumed that you were ... or else were just crying 'waah, waah, where's my binky?' like a toddler .... 😉 I'd really hoped for the former...
PHP can draw dynamic images on the fly from the server; determine file sizes on the server; and it can send information from the server to the client. Now, do you know if PHP is server-side or client-side? 🙂
The "best attempts" are attempts to assuage people who don't want to learn client-side multi-language solutions, which are the thing(s) currently needed for this scenario. I can't say why PHP doesn't have the capacity to deal directly with raw POST data; I didn't design it or write it, and I doubt that I could have....
But hope is not lost! Have you heard of Megaupload? To create this masterpiece, a few smart guys had to use PHP, Javascript, and CGI Perl :eek: (and of course a 'lil HTML). It's real time AFAIK, but I've not given it a lot of study (and it would take a bit). I think that it is as close as you can get to what I think you're asking for, unless you want a Java (not just Javascript) applet or ActiveX script that only works with IE (most likely) which was what I heard the ASP solution was sometime back....
HTH 🙂